161896 has 32 divisors (see below), whose sum is σ = 360000. Its totient is φ = 68208.

The previous prime is 161881. The next prime is 161911. The reversal of 161896 is 698161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161881) and next prime (161911).

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 14.

It is an unprimeable number.

161896 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2715 + ... + 2773.

It is an arithmetic number, because the mean of its divisors is an integer number (11250).

2¹⁶¹⁸⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180000).

161896 is an abundant number, since it is smaller than the sum of its proper divisors (198104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161896 is an equidigital number, since it uses as much as digits as its factorization.

161896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 68 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 161896 is about 402.3630201696. The cubic root of 161896 is about 54.5019498222.

The spelling of 161896 in words is "one hundred sixty-one thousand, eight hundred ninety-six".